Centrifugal liquid-separator.



No. 670,569. Patented Mar. 26,- [90L 0. J. a. swarm. GENTRIFUGA L LIQUID SEPARATUR.

(Application filed. Kay 29, 1900.)

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UNiTED STATES PATENT Grimes.

OSSIAN JOI-IAN ROBERT STRGM, OF STOCKHOLM, SWEDEN, ASSIGNOR TO AKTIEBOLAGET SEPARAT OR, OF SAME PLACE.-

CENTRIFUGAL LIQUID-SEPARATOR.

SPECIFICATION forming part of Letters Patent No. 670,569, dated March 26, 1901 Application filed May 29, 1900.

To all whom it may concern: I Be it known that I, OSSIAN J OHAN ROBERT STRoM, engineer, a subject of the King of taining a separate portion or device capable of being inserted or removed from such bowl, as required, and which bowls are now used for milk-separating purposes, it is the practice at the present time to effect the discharge of the separated milk through one or more narrow tubes or pipes soldered or otherwise fixed to the inner surface of. the bowl-cover. These pipes, however, cannot be cleaned Without some inconvenience, inasmuch as the cleaning operation necessitates the use of a brush which has to be drawn through each pipe. Besides, the pipes While being thus cleaned are apt to become damaged at the part where they are secured to the bowl cover, thereby affecting both the operation and the output of the machine. It has been attempted to remove this objection by arranging a conical casing or hood in the interiorof the bowlcover, to which it was secured in such a manner that the separated milk might be conducted away through the space which was left free between the outer cover and inner ho0d.- Both in the case of the narrow dis charging-pipes and in that of the hood, however, it has been found that where the removable body which was inserted consisted of a series of conical plates or disks there arose the difficulty that when the cover was screwed on this had very frequently the effect of turning the upper plate of the set out of its proper position, While in addition to this there remained a clear space between the hood and the topmost plate which caused the whole set of plates to become insecure and to begin to vibrate or jar the moment the centrifugal Serial No. 18,448. (No model.)

machine was set in motion. This was owing to the high speed at which it was necessary to make the machine revolve, and it necessarily exercised a disturbing effect upon the operation of the separator.

' The present invention has for its object to provide an arrangement by which the plates of the liner are caused to be and remain so firmly compressed as to be capable of no displacement during the operation of the machine, this compressing effect being secured quite independently of any action of the bowl cover, while at the same time the improved arrangement enables a predetermined supply of both cream and separated milk to be delivered from the separator.

In the accompanying drawings, which illustrate this invention, Figure l is a vertical central section through the bowl of the separator, and Fig. 2 is a plan thereof with the bowl-cover removed.

In the drawings, a designates the centrifugal bowl; I), the cover, which is firmly screwed down upon the same, and c the central milksupply pipe, with the deposit-chamber d at its lower end. The upper end of the milksupply pipe 0 is extended beyond the bowlcover b, at which point it is somewhat contracted and screw-threaded, as at e, to receive a nut f. The liner-body consists of a series of superposed hollow truncated cones g, of any wellknown construction, which may be held separated from each other by any suitable means as, for instance, by projections made in the cones or by means of yielding spacing-pieces placed between the cones, thus producing a flexible body. A hood h, of a shape corresponding to that of the cones, is placed over the liner, and the neck 1' of the hood projects slightly above the edge of the cover I) and is closed in by the nut f on the end of the supply-pipe 0. Between such neck '11 and the milk-supply pipe 0 an annular space It is provided sufficient for the passage'of the separated cream, such cream being discharged through a channel or groove m formed in the inner surface of the said neck 2' of the hood. Over the hood the cover b is then passed and screwed onto the bowl a in the customary manner. The neck of the cover should accurately fit the neck 2' of the hood. It will be seen that with this arrangement after the complete set of plates has been inserted into the bowl such plates may be compressed to the desired extent by pressing the hood h through the rotation of the screw-nut f, the pressure of which lowers the said hood as may be required and firmly fixes and retains the plates in position, the bowl-cover being put in place over the Whole after this has been accomplished. Any rotary motion or displacement of the hood h while it is being fixed in place is obviated by the projection n at the upper end of the milk-supply pipe 0, and which e11- gages in a corresponding recess 0 in the neck of the hood.

To prevent the cover I) from coming into contact with the hood h, the latter is provided with distance-pieces r on the upper side, so that there is left a free space .9 for the discharge of the separated milk, which is allowed to leave the machine through the hollow screw m.

It is feasible without in any Way interfering with the cover I) to readjust the hood h and by raising or lowering it to .bring more or less pressure to bear upon the plates, either before such cover has been mounted in its place or while it is fixed in position.

Having now particularly described and ascertained the nature of the said invention and in what manner the same is to be performed, I declare that what I claim is 1. In a centrifugal separator, in combination with the bowl and cover, of a supplypipe extending above said cover and having a deposit-chamber at its lower end, a liner composed of a series of superposed hollow truncated cones supported by said chamber, a hood mounted on said cones and having a recess formed in its neck, a lug on the sup ply-pipe to engage in said recess and a nut on said pipe above the cover for engaging the top of the hood, substantially as described.

2. In a centrifugal separator, in combination with the bowl, of a cover therefor provided with an outlet near its top, a supplypipe extending above the cover and having a deposit-chamber at its lower end, a liner composed of a series of superposed hollow truncated cones supported by said chamber, a hood mounted on said cones and extending above the coverand forming an annularchamber between said cover and hood, a lug on the supply-pipe adapted to engage a recess in the hood, and a nut on said pipe for adjusting the hood, substantially as and for the purpose specified.

3. In a centrifugal separator, in combination with the bowl, of a cover therefor provided with an outlet near its top, a supplypipe extending above the cover and having a deposit-chamber at its bottom, a liner comprising a series of superposed hollow truncated cones supported by the chamber, a hood mounted on said cones and having a neck provided with a discharge-opening extending above the cover, spacing-strips interposed between the cover and hood, a lug formed on the supply-pipe adapted to engage a recess in the neck of the hood and a nut on the supplypipe adapted to press upon the neck of the hood, substantially as described.

In testimony that I claim the foregoing as my invention I have signed my namein presence of two subscribing Witnesses.

OSSIAN JOHAN ROBERT S'lRlllll.

Witnesses:

TH. WAWRINSKY, M. GENBERG. 

